Enthalpy of formation of zinc acetate dihydrate

2011 ◽  
Vol 43 (6) ◽  
pp. 980-982 ◽  
Author(s):  
James T. Hughes ◽  
Alexandra Navrotsky
Keyword(s):  
Enthalpy Of Formation ◽  
Zinc Acetate ◽  
Zinc Acetate Dihydrate ◽  
Acetate Dihydrate

scholarly journals Biosynthesis, characterization, and antibacterial activity of ZnO nanoaggregates using aqueous extract from Anacardium occidentale leaf: comparative study of different precursors

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Eric Kwabena Droepenu ◽  
Ebenezer Aquisman Asare ◽  
Boon Siong Wee ◽  
Rafeah Binti Wahi ◽  
Frederick Ayertey ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Antibacterial Activity ◽  
Comparative Study ◽  
Aqueous Extract ◽  
Zinc Chloride ◽  
Zinc Acetate ◽  
Zinc Acetate Dihydrate ◽  
Inhibition Zone ◽  
Anacardium Occidentale ◽  
Acetate Dihydrate

Abstract Background Various parts of Anacardium occidentale plant possess curative qualities like antidiabetic, anti-inflammatory, antibacterial, antifungal, and antioxidant. Aqueous extract of this plant leaf was used in biosynthesizing zinc oxide (ZnO) nanoaggregates using two precursors of zinc salt (zinc acetate dihydrate [Zn(CH3COO)2∙2H2O] and zinc chloride [ZnCl2]). The synthesized ZnO samples were used in a comparative study to investigate the antibacterial activity against selected Gram-positive and Gram-negative microbes [Staphylococcus aureus, Exiguobacterium aquaticum (Gram +ve) and Escherichia coli, Klebsiella pneumoniae, Acinetobacter baumannii (Gram −ve)]. The synthesized ZnO nanoaggregates from the two precursors were characterized using Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy-dispersive x-ray spectroscopy (EDX) techniques. Results Micrographs of SEM and TEM confirmed nanoparticles agglomerated into aggregates. While spherical nanoaggregates were identified in samples prepared from Zn(CH3COO)2∙2H2O, flake-like structures were identified in samples synthesized from ZnCl2. Particle size determined by TEM was 107.03 ± 1.54 nm and 206.58 ± 1.86 nm for zinc acetate dihydrate and zinc chloride precursors respectively. ZnO nanoaggregate synthesized using zinc acetate as precursor gave higher antibacterial activity than its counterpart, zinc chloride with K. pneumonia recording the highest inhibition zone of 2.08 ± 0.03 mm (67.53%) whereas S. aureus recorded the least inhibition zone of 1.06 ± 0.14 mm (34.75%) for ZnO nanoaggregate from zinc chloride precursor. Also, antibacterial activity increases with increasing concentration of the extract in general. However, A. baumannii, E. aquaticum, and K. pneumoniae did not follow the continuity trend with regards to the 250 ppm and 500 ppm concentrations. Conclusion Biosynthesis of ZnO nanoaggregates using aqueous extract of A. occidentale leaf from zinc acetate dihydrate and zinc chloride as precursors was successful with the formation of nanospheres and nanoflakes. The study suggested that A. occidentale sp. could be an alternative source for the production of ZnO nanoparticles and are efficient antibacterial compounds against both Gram +ve and Gram −ve microbes with its promising effect against infectious bacteria.

Hydrothermal zinc oxide nanowire growth using zinc acetate dihydrate salt

2012 ◽  
Vol 27 (11) ◽  
pp. 1445-1451 ◽  
Author(s):  
Mehmet Can Akgun ◽  
Yunus Eren Kalay ◽  
Husnu Emrah Unalan
Keyword(s):  
Zinc Oxide ◽  
Zinc Acetate ◽  
Zinc Acetate Dihydrate ◽  
Nanowire Growth ◽  
Acetate Dihydrate ◽  
Zinc Oxide Nanowire ◽  
Image Position

Abstract

SPECTROSCOPIC ELLIPSOMETRY STUDIES ON ZINC OXIDE THIN FILMS DEPOSITED BY SOL–GEL METHOD WITH VARIOUS PRECURSOR CONCENTRATIONS

2019 ◽  
Vol 26 (03) ◽  
pp. 1850158 ◽  
Author(s):  
MARYAM MOTALLEBI AGHGONBAD ◽  
HASSAN SEDGHI
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Optical Properties ◽  
Spectroscopic Ellipsometry ◽  
Zinc Acetate ◽  
Optical Band Gap ◽  
Zinc Acetate Dihydrate ◽  
Sol Gel ◽  
Zno Thin Films ◽  
Acetate Dihydrate

Zinc Oxide thin films were deposited on glass substrates by sol–gel spin coating method. Zinc acetate dihydrate, 2-methoxyethanol and monoethanolamine were used as precursor, solvent and stabilizer, respectively. Zinc acetate dihydrate was used with different molar concentrations of 0.15, 0.25 and 0.5 M. Optical properties of ZnO thin films such as dielectric constants, absorption coefficient, Urbach energy and optical band gap energy were calculated by spectroscopic ellipsometry (SE) method. The effect of zinc acetate concentration on optical properties of ZnO thin films is investigated. ZnO thin film with Zn concentration of 0.25 M had the highest optical band gap. Wemple DiDomenico oscillator model was used for calculation of the energy of effective dispersion oscillator, the dispersion energy, the high frequency dielectric constant, the long wavelength refractive index and the free carrier concentration.

scholarly journals The crystal structure of zinc acetate dihydrate, Zn(CH3COO)2.2H2O

1953 ◽  
Vol 6 (8) ◽  
pp. 720-723 ◽  
Author(s):  
J. N. van Niekerk ◽  
F. R. L. Schoening ◽  
J. H. Talbot
Keyword(s):  
Crystal Structure ◽  
Zinc Acetate ◽  
Zinc Acetate Dihydrate ◽  
Acetate Dihydrate

An E.S.R. and proton ENDOR study of copper-doped zinc acetate dihydrate

1981 ◽  
Vol 42 (4) ◽  
pp. 985-997 ◽  
Author(s):  
N.M. Atherton ◽  
A.J. Horsewill
Keyword(s):  
Zinc Acetate ◽  
Zinc Acetate Dihydrate ◽  
Acetate Dihydrate

AZO transparent electrodes grown in situ during the deposition of zinc acetate dihydrate onto aluminum thin film by spray pyrolysis

2019 ◽  
Vol 30 (14) ◽  
pp. 13454-13461 ◽  
Author(s):  
Maíza S. Ozório ◽  
Mayk R. Nascimento ◽  
Douglas H. Vieira ◽  
Gabriel L. Nogueira ◽  
Cibely S. Martin ◽  
...  
Keyword(s):  
Thin Film ◽  
Spray Pyrolysis ◽  
Zinc Acetate ◽  
Zinc Acetate Dihydrate ◽  
Transparent Electrodes ◽  
Acetate Dihydrate ◽  
Aluminum Thin Film
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